Abstract: During the process of implementing new requirements or maintaining existing project codes,Android application developers often try to acquire code fragments related to specific themes and understand their logical structures.As it involves analytical work on the code level,it costs developers much time to locate code fragments and sorts out the implementation logic due to the complexity of codes’ structures and bad code style of developers.Therefore,it is important to find a method that can be used to locate the fragments quickly.In this paper,we proposed a scenario-oriented location method of Android applications.This method combines static analysis and dynamic analysis techniques according to an execution scenario of a specific theme,and then locates code fragments associated with the specific themes.The method comprises the steps of collecting and analyzing theme execution traces,static analyzing of Android source codes,information matching and synthesizing on top of static and dynamic methods,and visualizing the method information.We furthermore implemented a plug-in tool to facilitate the search process of codes’ information with respect to specific theme and support the highlight of code fragments specified by developers.

Key words: Android application,Theme function,Dynamic analysis,Static analysis,Feature location,Method host association graph,Method call graph